If you have lost your job, you should qualify for health insurance through COBRA for 18 months. This means that you will be able to get the same health insurance you had at your job for the same price (there might be a small fee added). However, you will now have to pay the full amount of the coverage when most likely your employer was paying part of it when you were working.
For many, this means that even though you will keep your same health insurance through COBRA, you will be paying more each month. It is convenient to keep your same coverage but not everyone can afford to do that and pay the whole amount. So you might be looking for alternatives and a good place to start is here: Don’t pay more for COBRA!! There are individual plans that may be more affordable for you so it pays to check out all your options first before you automatically sign up through COBRA.